<template>
	<view v-if="goods_info.goods_name" class="goods-detail-container">
    <!-- 轮播图 -->
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
		  <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
		    <image :src="item.pics_big" @click="preview(i)"></image>
		  </swiper-item>
		</swiper>
    
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">￥{{goods_info.goods_price}}</view>
      <!-- 商品信息主体区域 -->
      <view class="goods-info-body">
        <!-- 商品的名字 -->
        <view class="goods-name">{{goods_info.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免费</view>
    </view>
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    
    <!-- 商品导航组件区域 -->
    <view class="goods_nav">
      <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick"/>
    </view>
	</view>
</template>

<script>
  import {mapState,mapMutations,mapGetters} from 'vuex'
	export default {
    computed:{
      ...mapState('m_cart',[]),
      ...mapGetters('m_cart',['total'])
    },
    watch:{
      // total(newVal){
      //   const findResult = this.options.find(x => x.text === '购物车')
      //   if(findResult){
      //     findResult.info = newVal
      //   }
      // }
      total:{
        handler(newVal){
          const findResult = this.options.find(x => x.text === '购物车')
            if(findResult){
              findResult.info = newVal
            }
        },
        immediate:true
      }
    }
		data() {
			return {
				goods_info:{},
        options:[
        {
          icon:'shop',
          text:'店铺',
          infoBackgroundColor:'#007aff',
          infoColor:"red"
        },{
          icon:'cart',
          text:'购物车',
          info:0
        }],
        buttonGroup:[{
          text:'加入购物车',
          backgroundColor:'#ff0000',
          color:'#fff'
        },{
          text:'立即购买',
          backgroundColor:'#ffa200',
          color:'#fff'
        }]
			}
		},
    onLoad(options){
      const goods_id = options.goods_id
      this.getGoodsDetail(goods_id)
    },
    methods:{
      ...mapMutations('m_cart',['addToCart'])
      async getGoodsDetail(goods_id){
        const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id})
        if(res.meta.status !== 200) return uni.$showMsg()
        
        res.message.goods_introduce.replace(/<img /g,'<img style="display:block;"' )
        
        this.goods_info = res.message
      },
      preview(i){
        uni.previewImage({
          current:i,
          urls::this.goods_info.pics.map(x =>x.pics_big)
        })
      },
      onClick(e){
        if(e.content.text === '购物车'){
          uni.switchTab({
            url:'/pages/cart/cart'
          })
        }
      },
      buttonClick(e){
        // 1. 判断是否点击了 加入购物车 按钮
           if (e.content.text === '加入购物车') {
        
              // 2. 组织一个商品的信息对象
              const goods = {
                 goods_id: this.goods_info.goods_id,       // 商品的Id
                 goods_name: this.goods_info.goods_name,   // 商品的名称
                 goods_price: this.goods_info.goods_price, // 商品的价格
                 goods_count: 1,                           // 商品的数量
                 goods_small_logo: this.goods_info.goods_small_logo, // 商品的图片
                 goods_state: true                         // 商品的勾选状态
              }
        
              // 3. 通过 this 调用映射过来的 addToCart 方法，把商品信息对象存储到购物车中
              this.addToCart(goods)
        
           }
      }
    }
	}
</script>

<style lang="scss">
swiper{
  height: 750rpx;
  
  image{
    width: 100%;
    height: 100%;
  }
}
.goods-info-box{
  padding: 10px;
  padding-right: 0;
  .price{
    color: #c00000;
    font-size: 18px;
    margin: 10px 0;
  }
  .goods-info-body{
    display: flex;
    justify-content: space-between;
    .goods-name{
      font-size: 13px;
      margin-right: 10px;
    }
    .favi{
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }
  .yf{
    font-size: 12px;
    color: gray;
    margin: 10px 0;
  }
}
.goods_nav{
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}
.goods-detail-container{
  padding-bottom: 50px;
}
</style>
